instantmessenger

How to notify users about another one is now online?

I'm using yahoo messenger to chat with my friends. Every time a friend of mine comes online (almost intermediately) YM will notify me. How did Yahoo! (and other companies) do to implement this? As far as I guess, there are some techniques to solve this issue: Pulling: client constantly (500ms duration, maybe) asks server about which us...

How does mobile messenger work?

Hi, As far I am concern, ebuddy manages all users accounts and when users connect to messenger service (both from websites and mobile phones), they in fact connect through ebuddy server (not directly). Does EQO mobile messenger work in same way? Or we get connected directly from mobile to messenger server (yahoo,gtalk etc)? Doesn't the...

A pre-coded web-based client that can connect to OSCAR/AIM and/or GCHAT that I can host on my web server?

Does anyone know of a readymade web-based client that I can host on my personal web server to be able to connect to AIM? I guess I'm looking for more of a solution like gmail-lite (a php coded client that connects to gmail, hosted on your web server) but for instant messaging. Please help, thanks! ...